Professional Products Intake Manifold
Originally Posted by Hennytime
oh, i also just thought of something, does this new intake manifold have a burst disk in it like the fast 90 in case of a nitrous backfire
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We started shipping the 85mm LS1 model manifolds out to our warehouse distributors around the 6th or 7th of June. It takes a while for them to filter down to the retailers. We have had the manifolds in inventory for several weeks but did not have the fuel rail kit portion as they are made in a different factory than the manifolds. As soon as the fuel rails arrived, we packed them into the manifold boxes and started shipping them to our WD's the same day.
Those of you who have them on order should be receiving them very soon.
With respect to a burst panel, a cast aluminum manifold will not explode as easily as the plastic ones. Our manifold does have a flat aluminum panel on the bottom of it that is 2.5mm (0.098") thick. In the case of a violent backfire it would probably pop without damage to the manifold. Normally cast aluminum manifolds do not have any type of pop-off valve or burst panel unless it is a blower manifold.
Those of you who have them on order should be receiving them very soon.
With respect to a burst panel, a cast aluminum manifold will not explode as easily as the plastic ones. Our manifold does have a flat aluminum panel on the bottom of it that is 2.5mm (0.098") thick. In the case of a violent backfire it would probably pop without damage to the manifold. Normally cast aluminum manifolds do not have any type of pop-off valve or burst panel unless it is a blower manifold.
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Originally Posted by JasonWW
I looked at pictures of a 98 and a 2001 and they both had the same little muffler thing on the crossover. We need a picture to know what the hell we are talking about.
Here is my engine, can I get one of your LS1 versions with the 85mm inlet and fuel rails right now (and use my stock TB), or would I need to wait on your fuel rail regulator thingy?
Here is my engine, can I get one of your LS1 versions with the 85mm inlet and fuel rails right now (and use my stock TB), or would I need to wait on your fuel rail regulator thingy?
Until our kit is ready for engines that do have a regulator as part of the fuel rail assembly (1997-'98), you can assemble all the necessary parts from current aftermarket suppliers. There is a diagram in our manifold instructions that should give you enough info to plumb up what is needed.
Last edited by jimdavis@professiona; Jun 20, 2006 at 01:49 PM.
Originally Posted by DuronClocker
Yeah my Z is an earlier '98 (production date was like Nov. '97), and I don't have a fuel return line either. I was confused when I heard that 97-98 had a return line because mine doesn't, lol. That would mean the LS1 F-bodies never had a fuel system with a return line.
Originally Posted by Hennytime
im really considering putting this on the cc and selling the ls6...whens the lsx 96mm going to be out for the ls1
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Originally Posted by a98ws6
Is 96MM too big for stock cubed motors? Mines going to be a high reving drag car but dont want to go overboard with the intake? What would you guys recomend?
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Originally Posted by a98ws6
Is 96MM too big for stock cubed motors? Mines going to be a high reving drag car but dont want to go overboard with the intake? What would you guys recomend?
On our dyno tests we ran the stock t.b. and made over 500 hp with cam and heads and our manifold. Could we have made more with a bigger t.b.? Probably.
Like the stock 91mm t.b. our 96mm unit is designed with a spherical opening so that at part throttle you are seeing much less butterfly opening on the throttle body than you see with a straight bore t.b. This is so when you first start to open the throttle you don't let too much air in and cause a stumble.
That said, if you are running a relatively stock engine, I would certainly stick with the 85mm unit. As I said before, we squeezed over 500 hp out of one of these engines with a stock throttle body.
Originally Posted by jimdavis@professiona
That depends on a lot of other factors. If you have a big cam and aftermarket heads, you can use a larger t.b. G.M. went to a 91mm t.b. for the 400 hp LS2. I don't how how big the LS7 t.b. is to feed 505 hp. But if it is bigger than 91mm that would be a clue that a larger t.b. would help. Of course the LS7 is larger displacement but it actually comes down to how much air/fuel you can get into the engine regardless of displacement as to how much power it will make.
On our dyno tests we ran the stock t.b. and made over 500 hp with cam and heads and our manifold. Could we have made more with a bigger t.b.? Probably.
Like the stock 91mm t.b. our 96mm unit is designed with a spherical opening so that at part throttle you are seeing much less butterfly opening on the throttle body than you see with a straight bore t.b. This is so when you first start to open the throttle you don't let too much air in and cause a stumble.
That said, if you are running a relatively stock engine, I would certainly stick with the 85mm unit. As I said before, we squeezed over 500 hp out of one of these engines with a stock throttle body.
On our dyno tests we ran the stock t.b. and made over 500 hp with cam and heads and our manifold. Could we have made more with a bigger t.b.? Probably.
Like the stock 91mm t.b. our 96mm unit is designed with a spherical opening so that at part throttle you are seeing much less butterfly opening on the throttle body than you see with a straight bore t.b. This is so when you first start to open the throttle you don't let too much air in and cause a stumble.
That said, if you are running a relatively stock engine, I would certainly stick with the 85mm unit. As I said before, we squeezed over 500 hp out of one of these engines with a stock throttle body.
Thanks!
Originally Posted by gillbot
Is there going to be a package put together with the whole setup including the TB?
Originally Posted by Hennytime
its about 530 already, id say an even 500 and id pounce on it, not to mention it comes with fuel rails...
well i mean its just the tb and the intake w/ the fuel rails, and since its motor specific there shouldnt be much of anything else to get wit hit unless im forgeting a gasket or some bolts but its late
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Originally Posted by jimdavis@professiona
We started shipping the 85mm LS1 model manifolds out to our warehouse distributors around the 6th or 7th of June. It takes a while for them to filter down to the retailers. We have had the manifolds in inventory for several weeks but did not have the fuel rail kit portion as they are made in a different factory than the manifolds. As soon as the fuel rails arrived, we packed them into the manifold boxes and started shipping them to our WD's the same day.
Those of you who have them on order should be receiving them very soon.
With respect to a burst panel, a cast aluminum manifold will not explode as easily as the plastic ones. Our manifold does have a flat aluminum panel on the bottom of it that is 2.5mm (0.098") thick. In the case of a violent backfire it would probably pop without damage to the manifold. Normally cast aluminum manifolds do not have any type of pop-off valve or burst panel unless it is a blower manifold.
Those of you who have them on order should be receiving them very soon.
With respect to a burst panel, a cast aluminum manifold will not explode as easily as the plastic ones. Our manifold does have a flat aluminum panel on the bottom of it that is 2.5mm (0.098") thick. In the case of a violent backfire it would probably pop without damage to the manifold. Normally cast aluminum manifolds do not have any type of pop-off valve or burst panel unless it is a blower manifold.
So is this manifold going to support boost? 15 PSI pushing against such a thin panel..... has any testing been done in this area?
